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tft.drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color)
  • Effect:

Draw a square outline on the TFT screen

  • Parameters:

x:x coordinate of the starting point

y:y coordinate of the starting point

w:the length of the square

h:the width of the square

color:the color of the square

  • Example:
#define sclk 13
#define mosi 11
#define cs   5
#define dc   4
#define rst  -1  // you can also connect this to the Arduino reset

#include <Adafruit_GFX.h>    // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library
#include <SPI.h>

#if defined(__SAM3X8E__)
    #undef __FlashStringHelper::F(string_literal)
    #define F(string_literal) string_literal

Adafruit_ST7735 tft = Adafruit_ST7735(cs, dc, mosi, sclk, rst);

void setup(void) {
  tft.initR(INITR_BLACKTAB);   // initialize a ST7735S chip, black tab
  tft.drawRect(20, 50, 40, 20, ST7735_BLUE);

void loop() {  }

[Return to TFT_ST7735 Syntax Manual]